/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.springmvc.theme;

import org.springframework.web.servlet.ThemeResolver;
import org.tinygroup.logger.LogLevel;
import org.tinygroup.logger.Logger;
import org.tinygroup.logger.LoggerFactory;
import org.tinygroup.springmvc.extension.RequestInstanceHolder;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class TinyThemeResolver implements ThemeResolver {
	protected static final Logger logger = LoggerFactory
			.getLogger(TinyThemeResolver.class);

	public String resolveThemeName(HttpServletRequest request) {
		ThemeResolver themeResolver = RequestInstanceHolder
				.getMappingInstance().getCommonThemeResolver();
		if (themeResolver != null) {
			logger.logMessage(LogLevel.DEBUG,
					" invoke themeResolver.resolveThemeName() method that will proxy ["
							+ themeResolver + "]");
			return themeResolver.resolveThemeName(request);
		}
		return null;
	}

	public void setThemeName(HttpServletRequest request,
			HttpServletResponse response, String themeName) {
		ThemeResolver themeResolver = RequestInstanceHolder
				.getMappingInstance().getCommonThemeResolver();
		if (themeResolver != null) {
			logger.logMessage(LogLevel.DEBUG,
					" invoke themeResolver.setThemeName() method that will proxy ["
							+ themeResolver + "]");
			themeResolver.setThemeName(request, response, themeName);
		}
	}

}
